mirror of
https://github.com/mozilla/gecko-dev.git
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400 lines
9.9 KiB
C++
400 lines
9.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsCOMPtr.h"
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#include "nsVoidArray.h"
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#include "nsIContentViewer.h"
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#include "nsIDocumentViewer.h"
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#include "nsIDocument.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMXULDocument.h"
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#include "nsIDiskDocument.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMSelection.h"
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#include "nsIDOMAttr.h"
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#include "nsIEditor.h"
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#include "nsIHTMLEditor.h"
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#include "nsInterfaceState.h"
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nsInterfaceState::nsInterfaceState()
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: mEditor(nsnull)
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, mWebShell(nsnull)
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, mBoldState(eStateUninitialized)
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, mItalicState(eStateUninitialized)
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, mUnderlineState(eStateUninitialized)
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, mDirtyState(eStateUninitialized)
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{
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NS_INIT_REFCNT();
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}
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nsInterfaceState::~nsInterfaceState()
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{
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}
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NS_IMPL_ADDREF(nsInterfaceState);
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NS_IMPL_RELEASE(nsInterfaceState);
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NS_IMETHODIMP
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nsInterfaceState::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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if (nsnull == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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*aInstancePtr = nsnull;
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if (aIID.Equals(nsIDOMSelectionListener::GetIID()))
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{
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*aInstancePtr = (void*)(nsIDOMSelectionListener*)this;
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AddRef();
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return NS_OK;
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}
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if (aIID.Equals(nsIDocumentStateListener::GetIID()))
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{
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*aInstancePtr = (void*)(nsIDocumentStateListener*)this;
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AddRef();
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return NS_OK;
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}
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if (aIID.Equals(nsCOMTypeInfo<nsISupports>::GetIID()))
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{
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*aInstancePtr = (void*)(nsISupports *)(nsIDOMSelectionListener*)this;
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AddRef();
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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NS_IMETHODIMP
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nsInterfaceState::Init(nsIHTMLEditor* aEditor, nsIWebShell *aChromeWebShell)
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{
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if (!aEditor)
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return NS_ERROR_INVALID_ARG;
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if (!aChromeWebShell)
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return NS_ERROR_INVALID_ARG;
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mEditor = aEditor; // no addreffing here
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mWebShell = aChromeWebShell;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsInterfaceState::NotifyDocumentCreated()
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsInterfaceState::NotifyDocumentWillBeDestroyed()
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsInterfaceState::NotifyDocumentStateChanged(PRBool aNowDirty)
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{
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// update document modified. We should have some other notifications for this too.
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return UpdateDirtyState(aNowDirty);
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}
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NS_IMETHODIMP
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nsInterfaceState::NotifySelectionChanged()
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{
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return ForceUpdate();
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}
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NS_IMETHODIMP
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nsInterfaceState::ForceUpdate()
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{
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nsresult rv;
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// we don't really care if any of these fail.
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// update bold
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rv = UpdateTextState("b", "Editor:Bold", "bold", mBoldState);
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// update italic
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rv = UpdateTextState("i", "Editor:Italic", "italic", mItalicState);
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// update underline
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rv = UpdateTextState("u", "Editor:Underline", "underline", mUnderlineState);
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// udpate the font face
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rv = UpdateFontFace("Editor:Font:Face", "font", mFontString);
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// update the paragraph format popup
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rv = UpdateParagraphState("Editor:Paragraph:Format", "format", mParagraphFormat);
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// update the list buttons
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rv = UpdateListState("Editor:Paragraph:ListType");
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return NS_OK;
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}
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PRBool
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nsInterfaceState::SelectionIsCollapsed()
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{
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nsresult rv;
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// we don't care too much about failures here.
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nsCOMPtr<nsIEditor> editor = do_QueryInterface(mEditor, &rv);
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if (NS_SUCCEEDED(rv))
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{
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nsCOMPtr<nsIDOMSelection> domSelection;
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rv = editor->GetSelection(getter_AddRefs(domSelection));
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if (NS_SUCCEEDED(rv))
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{
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PRBool selectionCollapsed = PR_FALSE;
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rv = domSelection->GetIsCollapsed(&selectionCollapsed);
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return selectionCollapsed;
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}
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}
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return PR_FALSE;
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}
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nsresult
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nsInterfaceState::UpdateParagraphState(const char* observerName, const char* attributeName, nsString& ioParaFormat)
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{
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nsStringArray tagList;
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mEditor->GetParagraphTags(&tagList);
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PRInt32 numTags = tagList.Count();
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if (numTags > 0)
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{
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nsAutoString thisTag;
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tagList.StringAt(0, thisTag);
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if (thisTag != mParagraphFormat)
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{
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nsresult rv = SetNodeAttribute(observerName, attributeName, thisTag);
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if (NS_FAILED(rv)) return rv;
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mParagraphFormat = thisTag;
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}
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}
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return NS_OK;
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}
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nsresult
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nsInterfaceState::UpdateListState(const char* observerName)
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{
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nsresult rv = NS_ERROR_NO_INTERFACE;
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nsCOMPtr<nsIDOMSelection> domSelection;
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{
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nsCOMPtr<nsIEditor> editor = do_QueryInterface(mEditor);
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editor->GetSelection(getter_AddRefs(domSelection));
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}
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PRBool inOL = PR_FALSE;
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PRBool inUL = PR_FALSE;
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nsCOMPtr<nsIDOMNode> domNode;
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if (domSelection)
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domSelection->GetAnchorNode(getter_AddRefs(domNode));
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// tagStr will hold the list state when we're done.
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nsAutoString tagStr("ol");
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nsCOMPtr<nsIDOMElement> parentElement;
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rv = mEditor->GetElementOrParentByTagName(tagStr, domNode, getter_AddRefs(parentElement));
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if (NS_FAILED(rv)) return rv;
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if (!parentElement)
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{
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tagStr = "ul";
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rv = mEditor->GetElementOrParentByTagName(tagStr, domNode, getter_AddRefs(parentElement));
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if (NS_FAILED(rv)) return rv;
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if (!parentElement)
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tagStr = "";
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}
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if (tagStr != mListTag)
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{
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rv = SetNodeAttribute(observerName, "format", tagStr);
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mListTag = tagStr;
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}
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return rv;
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}
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nsresult
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nsInterfaceState::UpdateFontFace(const char* observerName, const char* attributeName, nsString& ioFontString)
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{
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nsresult rv;
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PRBool firstOfSelectionHasProp = PR_FALSE;
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PRBool anyOfSelectionHasProp = PR_FALSE;
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PRBool allOfSelectionHasProp = PR_FALSE;
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nsCOMPtr<nsIAtom> styleAtom = getter_AddRefs(NS_NewAtom("font"));
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nsAutoString faceStr("face");
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if (SelectionIsCollapsed())
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{
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rv = mEditor->GetTypingStateValue(styleAtom, ioFontString);
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}
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else
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{
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rv = mEditor->GetInlineProperty(styleAtom, &faceStr, nsnull, firstOfSelectionHasProp, anyOfSelectionHasProp, allOfSelectionHasProp);
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}
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// XXX this needs finishing.
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return rv;
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}
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nsresult
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nsInterfaceState::UpdateTextState(const char* tagName, const char* observerName, const char* attributeName, PRInt8& ioState)
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{
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nsresult rv;
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nsCOMPtr<nsIAtom> styleAtom = getter_AddRefs(NS_NewAtom(tagName));
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PRBool testBoolean;
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if (SelectionIsCollapsed())
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{
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PRBool stateHasProp = PR_FALSE;
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rv = mEditor->GetTypingState(styleAtom, stateHasProp);
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testBoolean = stateHasProp;
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}
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else
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{
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PRBool firstOfSelectionHasProp = PR_FALSE;
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PRBool anyOfSelectionHasProp = PR_FALSE;
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PRBool allOfSelectionHasProp = PR_FALSE;
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rv = mEditor->GetInlineProperty(styleAtom, nsnull, nsnull, firstOfSelectionHasProp, anyOfSelectionHasProp, allOfSelectionHasProp);
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testBoolean = allOfSelectionHasProp; // change this to alter the behaviour
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}
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if (NS_FAILED(rv)) return rv;
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if (testBoolean != ioState)
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{
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rv = SetNodeAttribute(observerName, attributeName, testBoolean ? "true" : "false");
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if (NS_FAILED(rv))
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return rv;
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ioState = testBoolean;
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}
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return rv;
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}
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nsresult
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nsInterfaceState::UpdateDirtyState(PRBool aNowDirty)
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{
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if (mDirtyState != aNowDirty)
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{
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nsresult rv; // = SetNodeAttribute("Editor:Save", "disabled", aNowDirty ? "true" : "false");
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rv = SetNodeAttribute("Editor:Save", "disabled", aNowDirty ? "false" : "true");
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if (NS_FAILED(rv)) return rv;
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mDirtyState = aNowDirty;
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}
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return NS_OK;
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}
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nsresult
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nsInterfaceState::SetNodeAttribute(const char* nodeID, const char* attributeName, const nsString& newValue)
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{
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nsresult rv = NS_OK;
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if (!mWebShell)
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return NS_ERROR_NOT_INITIALIZED;
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nsCOMPtr<nsIContentViewer> cv;
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rv = mWebShell->GetContentViewer(getter_AddRefs(cv));
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsIDocumentViewer> docViewer = do_QueryInterface(cv, &rv);
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsIDocument> chromeDoc;
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rv = docViewer->GetDocument(*getter_AddRefs(chromeDoc));
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsIDOMXULDocument> xulDoc = do_QueryInterface(chromeDoc, &rv);
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsIDOMElement> elem;
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rv = xulDoc->GetElementById( nodeID, getter_AddRefs(elem) );
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if (NS_FAILED(rv) || !elem) return rv;
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return elem->SetAttribute(attributeName, newValue);
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}
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nsresult
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nsInterfaceState::UnsetNodeAttribute(const char* nodeID, const char* attributeName)
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{
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nsresult rv = NS_OK;
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if (!mWebShell)
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return NS_ERROR_NOT_INITIALIZED;
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nsCOMPtr<nsIContentViewer> cv;
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rv = mWebShell->GetContentViewer(getter_AddRefs(cv));
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsIDocumentViewer> docViewer = do_QueryInterface(cv, &rv);
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsIDocument> chromeDoc;
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rv = docViewer->GetDocument(*getter_AddRefs(chromeDoc));
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsIDOMXULDocument> xulDoc = do_QueryInterface(chromeDoc, &rv);
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsIDOMElement> elem;
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rv = xulDoc->GetElementById( nodeID, getter_AddRefs(elem) );
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if (NS_FAILED(rv) || !elem) return rv;
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return elem->RemoveAttribute(attributeName);
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}
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nsresult NS_NewInterfaceState(nsIHTMLEditor* aEditor, nsIWebShell* aWebShell, nsIDOMSelectionListener** aInstancePtrResult)
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{
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nsInterfaceState* newThang = new nsInterfaceState;
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if (!newThang)
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return NS_ERROR_OUT_OF_MEMORY;
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*aInstancePtrResult = nsnull;
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nsresult rv = newThang->Init(aEditor, aWebShell);
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if (NS_FAILED(rv))
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{
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delete newThang;
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return rv;
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}
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return newThang->QueryInterface(nsIDOMSelectionListener::GetIID(), (void **)aInstancePtrResult);
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}
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